In the 'Listening Guide 1' to Mahler's Third available on flaminioonline, regarding the last movement, one reads:
VI. Lento. Molto tranquillo ma intenso. The work concludes, following famous examples, with an adagio in which the anxiety of interiority resolves into a devout, enveloping contrapuntal writing, in the style of the Prelude to Act III of the *Maestri cantori*; but the Wagner that shines through most is naturally that of *Parsifal*, whose volitional leaps of ascending fourths also structure our finale, destined, according to Mahler's words, to symbolize "the summit, the highest level from which one can admire the world". Only that these epilogues in heaven, or dialogues with God the Father, truly succeed only for people like Dante, Bach, Goethe, or Beethoven; noble, tense in its ascent is the Mahler who concludes the Third; we listen to him with a hand on our heart and head bowed; but every now and then we would like to look further down, if perhaps some lively little angel from before had remained in circulation, and then, even further down, some know-it-all cuckoo, some postilion's horn out of order.
http://www.flaminioonline.it/Guide/Mahler/Mahler-Sinfonia3.html
[ Epilogue in heaven: music in which a superior and pacified detachment from passions, from the world, and from the heaviness of living echoes. And it must be a final movement, or the final part, of an opera; otherwise, it is not an 'epilogue' ]
Now, with all due respect and sympathy for Pestelli . . .
1) What would—or what would not—this finale of Mahler's Third have lacked, in order to not have truly succeeded as an epilogue in heaven?
2) Leaving Dante and Goethe aside (I would prefer to speak, first and foremost, of music), what would be brilliant examples of epilogues in heaven in the works of Bach and Beethoven?
If I must try to answer myself, regarding question 2 I must admit that, as far as Bach is concerned, I have a very patchy knowledge of the cantatas; Beethoven's work, on the other hand, I know very well. And thus the only Beethovenian epilogues in heaven could be the Finale of the Pastoral and of Sonata op.111. But it is the first question that interests me most.
It would be nice to ask Pestelli, if one could.
But what do you all think about this?